Pith Number

pith:COBQGMAH

pith:2013:COBQGMAH47KJ4Q27DS4YUFOSRE

not attested not anchored not stored refs pending

Simulating extremely metal-poor gas and DLA metal content at redshift z=7

Benedetta Ciardi, Umberto Maio, Volker Mueller

arxiv:1307.6211 v1 · 2013-07-23 · astro-ph.CO · astro-ph.GA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{COBQGMAH47KJ4Q27DS4YUFOSRE}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T01:48:40.979932Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1383033007e7d49e435f1cb98a15d28938d6aeaf715e9078c4dea5ca173bb9a1

Aliases

arxiv: 1307.6211 · arxiv_version: 1307.6211v1 · doi: 10.48550/arxiv.1307.6211 · pith_short_12: COBQGMAH47KJ · pith_short_16: COBQGMAH47KJ4Q27 · pith_short_8: COBQGMAH

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/COBQGMAH47KJ4Q27DS4YUFOSRE \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 1383033007e7d49e435f1cb98a15d28938d6aeaf715e9078c4dea5ca173bb9a1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bd37ce8c03e239235437b187db699af741a0838418723e6d8ff742a53519bc85",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-07-23T20:00:00Z",
    "title_canon_sha256": "e3cfdc94c8503248454d13d849eec607248a0fc966439aa6b4f9fe1b13d6d2a8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.6211",
    "kind": "arxiv",
    "version": 1
  }
}